Silicone oil generally refers to a linear polysiloxane that remains liquid at room temperature. It is a silicone product with a wide range of applications and a wide range of applications. According to the different classification of the substituent groups on the polysiloxane chain, silicone oil can be divided into: methyl silicone oil, phenyl silicone oil, ethyl silicone oil, hydroxy silicone oil, amino silicone oil, hydrogen silicone oil, vinyl silicone oil and polyether modified silicone oil. , fluorosilicone oil and many other types.
The following is a description of several representative types of silicone oils:
1, dimethicone
Dimethicone is the most common type of silicone oil. It is the most widely used and widely used variety. In China, the name of methyl silicone oil is 201 series. The brands of Dow Corning Company are DOWCORNING and XIAMETER. The main models are PMX. -200 series; Germany's Wacker's brand name is AK series; Japan's Shin-Etsu company's brand name is KF. China's domestic methyl silicone oil production enterprises include: Blue Star Jiangxi Xinghuo, Yichang Kelin Silicon Material Co., Ltd., Zhejiang Xin'an Chemical, Guangzhou Tianci, Shandong Dayi Chemical, Jiaxing Kerui Silicone and so on.
2, phenyl silicone oil
Another type of phenyl silicone oil which is widely used is a product obtained by partially replacing a methyl group with a phenyl group. According to the difference in phenyl content, it can be classified into the following categories: Low phenyl silicone oil (phenyl mole fraction 5%) ~10%); medium phenyl silicone oil (phenyl mole fraction 25%); high phenyl silicone oil (phenyl mole fraction 45%); high phenyl low polymerization degree silicone oil (phenyl mole fraction is higher than 45%); Linked phenyl silicone oil.
3, ethyl silicone oil
Various ethyl ethoxysilanes are hydrolyzed in the presence of hydrochloric acid and condensed into polysiloxanes. After molecular rearrangement and fractionation under vacuum, various different viscosity ethyl silicone oils can be obtained. Used as a release agent for a variety of rubber and plastic products. The product has low volatility, small surface tension, non-toxic, non-corrosive, anti-aging, and can be formulated into different viscosities according to the needs of use. Widely used as insulation materials, precision instrumentation oil, hydraulic oil, special lubricants, etc. in the electrical industry.
4, hydroxy silicone oil
Hydroxy silicone oil can be used as a structure control agent for room temperature silicone rubber production and as a chain extender for other products. At present, it is mainly produced by Wacker Chemical, Credit Chemical, Hubei Longma, Bluestar, Zhejiang Hengyecheng and other enterprises.
5, amino silicone oil
Amino silicone oil is a basic component specially used in textile soft finishing agents, mainly concentrated in Dow Corning, Blue Star, Shandong Dayi Chemical, Demei Wacker, Yichang Kelin and other enterprises. Dow Corning's brand name is mainly OFX series, Momentive's brand name is mainly TSF4708, and Shin-Etsu's brand name is DC-8209A.
6, hydrogen silicone oil
Domestic manufacturers of hydrogenated silicone oils use the 202 series name. At present, there are dozens of domestic enterprises producing hydrogen-containing silicone oil. Except Zhejiang Hengyecheng, Lanxing and Xin'an Chemical, the production capacity of other enterprises is below 4,000 tons/year. Dow Corning's brand name for hydrogen-containing silicone oil is mostly MHX series, Momentive's brand name is TSF series, and Shin-Etsu's brand name is mostly KF-99 series.
7, vinyl silicone oil
Vinyl silicone oil is the basic rubber for the production of liquid glue and silicone gel. At present, the main domestic manufacturers are: Blue Star Fire, Zhejiang Xin'an Chemical Group, Zhejiang Runhe. Other companies are relatively small.
8, modified silicone oil
Among the modified silicone oils, polyether modified silicone oils are used in the largest amount, and are used in a large amount as a foam stabilizer, a fiber oil agent, a fabric finishing agent, a cosmetic raw material, a paint leveling agent, an antifoaming agent, and a pesticide spreading agent; Fluorosilicone oil has excellent weather resistance, lubricity and oleophobicity because of its common advantages of siloxane and fluorocarbon. It should be widely used in the fields of friction such as aerospace, automotive, electromechanical and electronic machinery.
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